This bomb shelter-themed bar has barely changed since it opened.

Semi-recognized center of the world, with many oddities.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

Formerly Fire Station No. 27, the museum is a hidden gem in the heart of Hollywood.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

These unusual houses look like giant boats that washed ashore on a residential street.

This unique sculpture is often overlooked by pedestrians.

What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

A small house sits between two huge rocks, with its back to the sea.

This combination shop and museum is filled with curious items and artifacts.

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Despite dreams of constructing this fairytale mansion, Albert Gotthard Nestor Cedergren never saw its completion.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

A prehistoric geological oddity tucked behind Stockholm's natural history museum.

Absolutely no saxophones in the library.

This building, previously used as a courthouse, has an unusual geological feature in its basement.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Hans Christian Andersen for the postmodern world.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.